function submitTopic(){
	var topicContent = $("#topicContent").val();
	$.post(ctx+"/forum/topic/postTopic", {topicSubject: topicContent, topicCategory:1},
		function(result){
			if(isSuccess(result.code)){
				alert("添加成功");
			}else{
				aleret("添加失败");
			}
	});
}